- Machine Shop & Tool Repair Service, St George Brant
- Machinery And Equipment Manufacturers, St George Brant
- Machinery Movers & Erectors, St George Brant
- Machinery, Supplies & Equipment - Business Production Related, St George Brant
- Machinery, Supplies & Equipment - Construction & Contractor Related, St George Brant
- Management Consultants & Services, St George Brant
- Manufacturing, St George Brant
- Manufacturing Products, St George Brant
- Massage Therapists & Professional, St George Brant
- Massage Therapy, St George Brant
- Mechanical Contractors, St George Brant - Install, Service & Repair
- Medical Supplies & Equipment, St George Brant
- Membership Sports & Recreation Clubs, St George Brant
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- Metal Buildings, St George Brant - Kits, Homes, Steel Buildings, etc
- Millwrights, St George Brant
- Mini & Self Storage, St George Brant
- Miscellaneous Household Item Repair, St George Brant
- Miscellaneous Government, St George Brant
- Miscellaneous Manufacturing, St George Brant
- Miscellaneous Professional, St George Brant
- Mortgage Companies, St George Brant
- Motion Picture Pre & Post Production Services, St George Brant
- Motor Vehicle, St George Brant
- Moving Companies, St George Brant
- Muffler Shop & Exhaust Systems, St George Brant
- Museums, St George Brant
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